12 51 100 Replacing Wiring Harness Section For Ignition Coil (S54)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW M3, 2005 BMW M3, 2004 BMW M3, 2003 BMW M3, and 2002 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Turn off ignition.

Remove heater bulkhead. Refer to 51 71 080 REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD .

Lever out expansion rivets.

Remove air duct (1).

Fig 1: Identifying Air Duct

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Remove engine vent (1).

Release screws.

Unscrew oil filler cap (2).

Remove ignition coil cover.

Fig 2: Locating Engine Vent And Oil Filler Cap

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Release screws (1) on cable strip (2).

Fig 3: Identifying Screws On Cable Strip

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Tilt plug locks (1) of ignition coils upwards.

Fig 4: Aligning Plug Locks Of Ignition Coils Upwards

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Detach plugs (1) from ignition coils.

Fig 5: Detaching Plugs From Ignition Coils

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Disconnect ground connection (1).

Pull out wiring harness (2) towards top.

Fig 6: Aligning Wiring Harness

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Detach plug connections of wiring harness section for ignition coils in electronics box. This task is described in 12 14 550 REPLACING CONTROL MODULE (DME) .

Detach strip on left equipment partition wall.

Withdraw wiring harness section for ignition coils from left equipment partition wall and remove.

Installation:

Pay attention to correct installation position of seal from wiring harness section for ignition coils in left equipment partition wall.

NOTE: Interrogate fault memory of DME control unit. Check stored fault messages. Rectify faults. Then clear fault memory.